Why in news?
The Indian Navy’s submarine INS Sindhukesari made an operational turnaround visit to Colombo on 3 May 2026. Sri Lanka’s Navy welcomed the boat as part of routine logistics support and maritime cooperation. The visit followed a joint diving exercise held in April and showcased deepening naval ties between the two countries.
Background
INS Sindhukesari (hull number S60) is a diesel‑electric submarine of the Sindhughosh class (Kilo class). Built by Russia and commissioned in 1988, it displaces about 2,300 tonnes surfaced and over 3,000 tonnes submerged. The vessel is 72.6 m long with a beam of 9.9 m. It has a double‑hull design with six watertight compartments and anechoic tiles to reduce sonar detection. Propulsion comes from a single shaft powered by diesel engines and electric motors, allowing speeds up to 19 knots submerged. The submarine carries torpedoes and anti‑ship missiles and is equipped with a Strela‑3 surface‑to‑air missile launcher. It can stay at sea for about 45 days with a crew of 52.
Key points
- Operational turnaround (OTR): An OTR visit allows a warship or submarine to refuel, replenish supplies and provide rest to the crew during extended deployments. INS Sindhukesari’s stop in Colombo also included professional exchanges with the Sri Lanka Navy.
- Recent exercises: The visit came after the India–Sri Lanka diving exercise DIVEX 2026, held from 21–28 April. The exercise focused on mixed‑gas diving and complex underwater operations around historic shipwrecks. It also featured humanitarian outreach, including donating medical supplies under the Aarogya Maitri initiative.
- Strategic cooperation: India’s MAHASAGAR vision aims to enhance maritime security and cooperation across the Indian Ocean region. Port calls like this strengthen interoperability and reassure partners of India’s commitment to a free and open Indo‑Pacific.
Significance
The visit demonstrates India’s expanding naval footprint and its emphasis on partnerships with neighbouring countries. INS Sindhukesari’s presence also highlights the operational readiness of the Sindhughosh class submarines, which remain a vital part of India’s undersea fleet.
Sources: Tribune India
